Gas-producer.



G. AKERLUND.

GAS PRODUCER. APPL'I'UATION FILED AUG ze, 1908.

Patented June15,19o9.

. v 2 SHYEETS-SHBET l. o 1- l vnf/wok G. AKERLUND.

GAS PRODUCER. Y l APPLICATION 'FILED AUG'. 28, 1908. 925,41 5. Patented June 15, 1909.

2 SHEETS-SHEET 2.

' ducing UNITED sirnrns GUSTAF AKERLUN D, OF lWILKINSBURG, PENNSYLVANIA.

GAS-PRODUCER.

Specification of Letters Patent.

Patented .rune 15, 190e..

Appucauon mea August 2s, 190s. 'serial No. 450,649.

To all whom it may concern:

Be it known that I, GUsrAF AKERLUND, a citizen of Sweden, residing at l/Vilkinsburg, in vthe county of. Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas-Producers; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to devices for progas from coal; and it consists in the novel construction and combination of the parts hereinafter-fully described and claimed.

In the drawings, Figure'l is a Vertical section through the gas producer. Fig. 2 is a side view of the stack-pipe. Fig. 3 is a plan View of the gas producer. Fig. 4 is a vertical section through the bottom part of the gas producer turned around one-quarter from the position shown in Fig. 1.

A is the shell ol' the coal receiver which is provided with a lining e of fire-brick or other similar material.

B is the vaporizcr which supports the coal receiver'. This vaporizer consists ol' an annular chamber for holding water which has an oil'set annular space b for steam and air at its upper part. The central portion b of the vaporizer forms the ash-pot, which is of substantially the same diameter as the'coal receiver above it. This ash-pot is kept tlillcd with ashes up to about the level ol' its top edge '2. The iire is arranged to burn close above the level. of the top edge 2, and the coal receiver is filled with coal to any desired level.

C are poke-holes in the sides'ol' the coal receiver at its tiring zone, ywhich are provided with suitable closures.

D is the ash-pit under the vaporizer. 'llns ash-pit is provided with two doors d, one on cach side of it, through which the ashes may be removed from time to time, and v1t has a wall or bridge d extending across itsmiddle part between the said doors.

E is an annular gas-chamber which encircles the lower art of the vlaporizer, and which is formed y the conical outer side ortion e of the vaporizer and a cylindrical s ell e which is arranged in line with the shell A of the coal receiver. The ash-pit D isformed of a. continuation of the shell e', and it is. lined Wlth fire-brick f or othersimlar material. f

' F is the gas-outlet pi e which is lconnected to one side of the gas-c amber E, and f is a horizontal partition late secured under' onehalf of the ash-pot i adjacent to the outlet pipe F. Thisplate f constrains the gas to pass from the middle part of the ash-pot to the outlet pipe, and preventsthe gas from Abeing drawn 'chieiiy from one side of the ashpot, which would make the m an undesirable way. l

G is a pipe connected to the vaporizer and rovided with a'water-supply plpe g anda rain-pipe g so that the water inthe vaporizer is maintained at a substantially uniform level, but any other approved' means for this purpose may be used.

I are two inlet pipes for air arranged within the lining of the coal receptacle'and having their lower ends connected to the steam space b of the vaporizer. These Ipipes H extend vertically through the topp ate I of the gas producer. l Two pipes h are also connected to the steam space b, and are arranged between the two inlet pipes H. The upper ends of the pipes h are provided with branches h which connect them with the upper part of the coal receiver above the level of the coal. The pipes 7L have also branches t which project through the top plates I and which are provided with removable caps t".

The top plate Iis provided with a central charging door J through ywhich the coal is fed, and this door has a hole j which is usually closed by a plate j.; When the lire is to be started up in the producer, the plate y" is removed, and a small stack-pipe K, shown in Fie' 9 is connected to the top plate I. 'Air producer operate is then forced upwardly through the ash-pot,

by any suitable means, and the products of combustion pass olf by the stack-pipe, until a sullicient quantity of fuel has become incandescent in the lower part of the coal receiver.

L is a water-trap which is connectedtothe gas-outlet pipe F.

This trap 1s vprovided with a partitionl plate m, and mis a curved' pipe which connects the upper space of the trap, into which the gas is discharged, with the gas-space n, on the other side oi the said partition plate.

N is an outlet-pipe for connectin the .trap L with a scrubber, and n' is a brano pip@ for connecting the trap with a gas blower or Y' exhauster of any approvedv construction. J

` The water from the spray lt is a water outlet valve at the lower part '1: of the water-trap, which is normally open so that the water stands in the trap below the lower end of the curved pipe m; A small valve r is connected to one 4side of the watertrap above the lower end of the pipe m', and is normall closed.- i

When t e gas (producer is to be laid oili, the

valve R is close and the valve r is opened. pilpe P rises until it flows out ofthe valve r. e Whole apparatus is then stopped, and the valve r is closed.v

The pipe m being closed by the water in the y trap, no aircan enter the gas producer, and

no gas canl pass out of it. The water spray cools the gas in the water-trap, and settles the dust,I which flows with the water down the chutes and accumulates in the bottom of the watertrap. The water-tra is rovided with any approved door or hanf, -ho e so that mud can be removed periodical A current of air is caused to the gas producer by any approved means, such as a gas-eXhauster, connected to the branch-pipe a. The cold air enters the pipes II, and is heated in its downward passage through them into the steam-space of the vaporizer. The Water in the vaporizer is .heated by the hot ashes in the ash-pot, and' the steam and vapor thus formed 1s mixed with the hot air, and passes upward through the pipes h and their branches h into thel top of the coal receiver. The air is drawn through the' coal in the coal receiver, and supports combustion therein. The steam regulates the temperature of the furnace, more or less', and is decomposed in the furnace and is mixed with the gases of distillation which undergo certain changes. The mixed gases are drawn through the ashes in the ash-pot, in which thel tar and other waste products are deposited, 'and the partly clean gas passes out by the outlet-pipe F and water-trap as heiei'nbefore described. The hot air and steam is superlieated in its upward passage through the ipes 7i. The peculiar i form of the bridge-wa l d in the ash-pit not only supports the luel but divides the ashes into two streams and facilitates the cleaning outof the ash-pit.

What I claim is:

1. In a gas producer, the combination, with a coal receiver, of a vaporizer arranged below the hre-zone of the said coal receiver, the central portion of the said vaporizer con-V stituting an ash-pot, means for supporting the ashes in the said ash-pot, a cover closing for water connected to the top ofthe receiver and preventing the en# trance of cold air, inlet pipes for warm air arranged in contact with the said receiver and connected to tliesaid'vaporizer, pipes for hot air and vapor of atmospheric pressure also arranged in contact with the said receiver and connecting its up er end ortion with the said vaporizer, an a close receiver for Vashes and gas arranged below the said ashpot and provided with an outlet pipe for the 'gas ' 2. In a gas producer, the combination with aco'al receiver provided with means for closing its upper end, of a vaporizer provided with an air-inlet and arranged below the firezone of the said coal receiver, the central portion of the said vaporizer constituting an ashot, means for normally retaining the ashes in the said ash-pot, a pipe for air and heated vapor of atmospheric pressure having its lower end connected to the said vaporizer and its upper end connected with the atmoshere and having a lateral branch `discharging into the upper part of the said coal receiver, a removable closing device for the upper end of the said` pi e above the said ranch, and a gas-outlet or receiving the gas after it has passed through the ashes in the said ash-pot. f v

3. In a gas producer, the combination, with an annular vaporizer provided with an air-inlet and having a central ash-pot, of a coal receiver supported above the said vaporizer and provided with a lining or wall of heat-resisting material, a vapor pipe extending longitudinally through the said lining and provided at its upper' end with branches connecting it with the atmosphere and with the ripper part of the receiver and having its lower end connected to the said vaporizer, and means for preventing the water in the said vaporizer from rising within the said.'

vaporpipe.

4. In a gas producer, the combination,

with an annular vaporizer provided with a A 5. In a gas producer, the combination,y

with an annular vaporizer provided with a conical lower part and having a central ash- -v pot, of an ash-pit arranged belowthe said vaporizer and forming anv annular i' gas-cham'-l ber around its conical lower part, a gas-outlet pipe connected to one side of the said Vgaschamber, aplate secured to the bottom of the said vaporizer adjacent'to the said gasoutletpipe and operating to draw the gas* from the'middlefart of the ash-pot, a Coal `receiver arrange .and means for admitting air into the said over the said veporizer,

vaporizer. A Y

6. .In a gas producer, j the combmatlon,

`with s. ges-discharge chamber having a lgas outlet-pipe, of a water-tra connected to the said gas outlet-pipe and aving apartition which extends into its water space and heving also a conneotingipe secured to the said partition and 4norma y connecting the said.

outlet-pipe with the gas space of the watertra; on the other side 0f the said artition, 15`

an two valves for regulating the eight of the water in the water-trap, said valves being arranged respectively` above and below the outlet' of the said connecting-pipe. i

In testimony whereof I have affixed my 20 signaturev in the presence of two Witnesses.

' 'GUSTAF 'AKERLUND Witnesses L. H. MCOABE, l C. H. JACKSON. 

